QCD Corrections to Jet Correlations in Weak Boson Fusion

Higgs boson production via weak boson fusion is sensitive to the tensor structure of the HVV (V=W,Z) couplings, which distinguishes loop induced vertices from SM expectations. At the CERN Large Hadron Collider this information shows up most clearly in the azimuthal angle correlations of the two forward and backward quark jets which are typical for weak boson fusion. We calculate the next-to-leading order QCD corrections to this process, in the presence of anomalous HVV couplings. Gluon emission does not significantly change the azimuthal jet correlations.Comment: 11 pages, 4 figure

A Forward Branching Phase Space Generator for Hadron colliders

In this paper we develop a projective phase space generator appropriate for hadron collider geometry. The generator integrates over bremsstrahlung events which project back to a single, fixed Born event. The projection is dictated by the experimental jet algorithm allowing for the forward branching phase space generator to integrate out the jet masses and initial state radiation. When integrating over the virtual and bremsstrahlung amplitudes this results in a single K-factor, assigning an event probability to each Born event. This K-factor is calculable as a perturbative expansion in the strong coupling constant. One can build observables from the Born kinematics, giving identical results to tradi- tional observables as long as the observable does not depend on the infrared sensitive jet mass or initial state radiation.Comment: 16 pages, 10 figure

Tau-Sneutrino NLSP and Multilepton Signatures at the LHC

In models with gravitino as the lightest supersymmetric particle(LSP), the next to lightest supersymmetric particle (NLSP) can have a long lifetime and appear stable in collider experiments. We study the leptonic signatures of such a scenario with tau-sneutrino as the NLSP, which is realized in the non-universal Higgs masses scenario. We focus on an interesting trilepton signature with two like-sign taus and an electron or a muon of opposite sign. The neutralinos and charginos are quite heavy in the model considered, and the trilepton signal comes mostly from the slepton-sneutrino production. We identify the relevant backgrounds, taking into account tau decays, and devise a set of cuts to optimize this trilepton signal. We simulate signal and backgrounds at the LHC with 14 TeV center-of-mass energy. Although the sleptons in this model are relatively light, O(100 GeV), discovery is more demanding compared to typical neutralino LSP scenarios. The trilepton signal requires large amount of accumulated data, at least ~80 fb^-1, at the CM energy of 14 TeV.Comment: 25 pages, 6 figures, minor changes to match the version published in Phys.Rev.

Anomalous Higgs boson couplings in vector boson fusion at the CERN LHC

Deviations from SM expectations in the Higgs sector can be parameterized by an effective Lagrangian. The corresponding anomalous couplings have been implemented in a Monte Carlo program for Higgs production in vector boson fusion, at NLO QCD accuracy. It allows to study anomalous coupling effects for production and decay of the Higgs boson. We analyze deviations allowed by LEP data and study a new azimuthal angle variable which directly measures the interference between CP-even, CP-odd and SM couplings.Comment: 15 pages, 8 figure

QCD corrections to vector boson fusion processes

NLO QCD corrections to H, W and Z production via vector boson fusion have recently been calculated in the form of flexible parton level Monte Carlo programs. This allows for the calculation of distributions and cross sections with cuts at NLO accuracy. Some features of the calculation, as well as results for the LHC, are reviewed.Comment: 1 style file, 1 latex file, 5 figures, Contribution to the Proceedings of "Loops and Legs in Quantum Field Theory, 2004", Zinnowitz, Usedom Island, Germany, April, 200

Peran FEALAC dalam Hubungan Dagang Indonesia - Amerika Latin Era Joko Widodo (2014-2017)

International trade has become an important issue for Indonesia which is a country with an economy that one of them is driven by export activities. The crisis in some of Indonesia's traditional trading partners affects the decline in demand for imported goods which has an impact on Indonesia's domestic economic situation. This becomes a serious problem and one way to anticipate it is to create new alternative markets to improve export performance. One potential market is the region of Latin America that has a considerable population and most countries do not apply large tariffs for imported goods but, some obstacles such as geographical distance and the lack of official channels between countries make the utilization of trade potential of the region to be not maximal. For that reason, Indonesia is involved in FEALAC, an intergovernmental cooperation forum linking East Asia that helps to improve relations with Latin American countries. Therefore, this study would like to identify how FEALAC's role in improving trade relations between Indonesia and Latin America. With the concept of Interregionalism researchers will try to see the role of FEALAC in improving trade relations Indonesia - Latin America. Research methodologies that researchers use include data collection and data analysis. In data collection, researchers are more inclined to use literature research techniques (Library Research). FEALAC role for Indonesia is more to the economic field because it can be a bridge for Indonesia if you want to do trade relations with Latin America. Especially in the era of Joko Widodo who has quite a lot of trade agreements with countries in Latin America

Spare Parts Surgery for Oncologic Reconstruction to Preserve Local Advancement Flap for Decubitus Ulcer Reconstruction: A Case Report

A 58-year-old male presented to our institution with synchronous large left thigh sarcoma and sacral decubitus ulcer requiring oncologic resection and reconstruction. Due to extensive tumor involvement, use of local flap for reconstruction was not feasible. Therefore, a spare parts free fillet flap from the disarticulated lower leg was utilized for reconstruction following oncologic resection. The benefits of this spare parts approach include no donor site morbidity, sufficient tissue padding for later use of prosthesis, and preservation of other flaps for future reconstruction of his sacral decubitus ulcer

Higgs boson production in association with a photon via weak boson fusion

We present next-to-leading order QCD corrections to Higgs production in association with a photon via weak boson fusion at a hadron collider. Utilizing the fully flexible parton level Monte-Carlo program VBFNLO, we find small overall corrections, while the shape of some distributions is sensitive to radiative contributions in certain regions of phase-space. Residual scale uncertainties at next-to-leading order are at the few-percent level. Being perturbatively well under control and exhibiting kinematic features that allow to distinguish it from potential backgrounds, this process can serve as a valuable source of information on the $Hb\bar{b}$ Yukawa coupling.Comment: 8 pages. To appear in the proceedings of the "Photon 2011" conference held in Spa, Belgium Added reference to arXiv:1105.0920 [hep-ph

Charged Higgs-boson production in association with an electron and a neutrino at electron-positron colliders

We present results of a calculation of the cross section for the production of a charged Higgs boson in association with an electron and a neutrino at electron-positron colliders (e+ e- -> H+ e- nu_e-bar, H- e+ nu_e). We study predictions for the cross section in the Minimal Supersymmetric Standard Model (MSSM) and the Two Higgs Doublet Model (THDM), highlighting possible differences. The process is effectively loop-induced in both models. Hence, the cross section is expected to be strongly model-dependent. Most notably, due to the presence of superpartners, the MSSM amplitude contains Feynman graphs of pentagon-type, which are not present in the THDM. This is the first complete one-loop calculation of the cross section for this process in the THDM and the MSSM. For both models, so far, only approximate results with limited ranges of validity were available. Our main aim here is to clarify several open questions in the existing literature on this process. Specifically, we will discuss the validity of the Heavy Fermion loop approximation in both models, and of the Fermion/Sfermion loop approximation in the MSSM.Comment: 21 pages, 8 figures, 1 tabl

Successful Latissimus Dorsi Free Flap Salvage using Intraoperative Vasopressors: A Case Report

Arterial thrombosis is a rare, but dreadful complication in microvascular surgery. Here we report on a case of recurrent arterial thrombosis in a latissimus dorsi (LD) free flap used for scalp reconstruction in an 18-year-old woman who sustained a gunshot wound (GSW) to the head. In the immediate postoperative period, internal and external doppler signals to the flap were lost. Emergent surgical exploration revealed arterial thrombosis, which was emergently explored and successfully repaired. Doppler signals were again lost and the flap was emergently explored for a second time. Following revision of the arterial anastomosis, flap perfusion decreased and appeared to correlate with the patient’s blood pressure. After administration of vasopressors to increase the Mean Arterial Pressure (MAP) to a goal of 70 or greater, flap perfusion and doppler signals were consistent. Here we describe a case of successful free flap salvage using both intraoperative and postoperative vasopressors for recurrent arterial thrombosis. Furthermore, vasopressor administration may be beneficial in select patients to maintain adequate flap perfusion in those who demonstrate intraoperative hypotension and no other identifiable causes of flap compromise, as in the present case